HTML Entities Encoder
Convert special characters to HTML entities and vice versa for safe web rendering.
What Is HTML Entity Encoding?
HTML entity encoding is the process of replacing special HTML characters with
their corresponding entity codes. An HTML entity encoder converts characters like
< and > into < and > so
they display safely in a browser. An HTML decoder reverses this process, turning
entity codes back into readable characters. Our free HTML entities tool handles
both encoding and decoding entirely on your device — nothing is sent to a server.
Common HTML Entities Reference
& &
Ampersand
< <
Less than
> >
Greater than
" "
Double quote
' '
Single quote
/ /
Forward slash
When to Encode vs Decode
Encode
Use encoding when you need to display HTML tags as text on a web page, embed user-generated
content safely, or prevent XSS vulnerabilities. Encoding turns <script>
into <script> so it renders harmlessly as text.
Decode
Use decoding when you have HTML entity codes that you want to convert back to readable characters. This is useful when extracting data from HTML source, processing API responses that use entities, or cleaning up escaped content for display in plain-text contexts.
Why Developers Use HTML Entities
- XSS Prevention — Encoding user input before rendering it in HTML prevents malicious script injection attacks.
- Code Display — Show code snippets on tutorials and documentation without the browser interpreting the markup.
- User-Generated Content — Safely display comments, forum posts, and profile data containing HTML special characters.
- Template Rendering — Template engines automatically encode variables to prevent injection when generating HTML pages.
- Email & RSS Feeds — HTML entities ensure special characters render correctly across different email clients and feed readers.
How to Use This HTML Entities Tool
To encode text to HTML entities, paste your content into the input field and
click Encode to HTML Entities. The tool will replace all special HTML characters
with their entity equivalents. To decode, paste entity codes and click
Decode from Entities. The tool recognizes named entities like &
and numeric entities like <. Use the Clear button to reset
both fields or Copy to copy the output to your clipboard.
HTML entity encoding is a foundational web security and typography standard defined by the W3C HTML specifications. In HTML syntax, certain characters—specifically '<', '>', '&', '"', and "'"—are reserved because they define tag boundaries, attributes, and entity declarations. If user-submitted data containing these characters is inserted directly into an HTML document without encoding, the browser's HTML parser interprets them as executable markup. This is the root cause of Cross-Site Scripting (XSS), one of the most dangerous and prevalent web application vulnerabilities. By converting '<' to '<', '>' to '>', and '&' to '&', the browser safely displays the intended text glyphs without executing scripts or altering DOM structure. In addition to security escaping, HTML entities provide named codes (like '©' for © or '—' for —) and numeric character references (like '€' for €) for displaying typography and international symbols reliably across all devices. WebUtil converts special characters to named entities, numeric codes, or decoded raw text instantly in your browser.
How to Do This in Code
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HTML Entities Encoder FAQ
What are HTML entities and why are they used?
HTML entities are special character codes used to represent reserved HTML characters (like < and >) and typographic symbols so browsers render them as visual text rather than executable markup.
How does HTML entity encoding prevent Cross-Site Scripting (XSS)?
When user input containing characters like <script> is converted to <script>, the browser renders the code harmlessly as text on the screen rather than executing it as JavaScript in the DOM.
What are the 5 critical HTML characters that must always be escaped?
The five essential characters are: & (becomes &), < (becomes <), > (becomes >), " (becomes "), and ' (becomes ' or ').
What is the difference between named entities and numeric character references?
Named entities use readable names (like © or €), while numeric character references use decimal (©) or hexadecimal (©) Unicode code points. Numeric references work for every Unicode glyph.
When should you encode vs decode HTML entities in web development?
Encode text before rendering dynamic, untrusted user data into HTML templates. Decode entities when parsing scraped HTML or converting HTML document content back into plain text.